大约有 40,000 项符合查询结果（耗时：0.0358秒） [XML]
xpath find if node exists
...
@SearchForKnowledge, you should probably ask that as a new question at SO, but as a quick guide: html/body and not(html/body/node()) (i.e., just test if it exists and it does not contain any child nodes, or text nodes).
– Abel
Sep 6 '15 at 1...
How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?
...a toISOString method. You're asking for a slight modification of ISO8601:
new Date().toISOString()
> '2012-11-04T14:51:06.157Z'
So just cut a few things out, and you're set:
new Date().toISOString().
replace(/T/, ' '). // replace T with a space
replace(/\..+/, '') // delete the d...
Most efficient way to increment a Map value in Java
....util.HashMap;
import java.util.Map;
...
Map<String, Integer> freq = new HashMap<String, Integer>();
...
int count = freq.containsKey(word) ? freq.get(word) : 0;
freq.put(word, count + 1);
TestForNull
import java.util.HashMap;
import java.util.Map;
...
Map<String, Integer> freq ...
IntelliJ: Working on multiple projects
...
For those that are new to IntelliJ and don't know where the "Maven Projects" window is: top right corner.
– dustin.schultz
Mar 8 '16 at 22:55
...
How to call one shell script from another shell script?
...th/to/script" )
As mentioned, exec replaces the shell without creating a new process. However, we can put it in a subshell, which is done using the parantheses.
EDIT:
Actually ( "path/to/script" ) is enough.
share
...
Using Pylint with Django
...ugins=pylint_django to linters/pylint/args setting. Note the '=' sign, it didn't work without it.
– Dennis Golomazov
Nov 19 '15 at 13:32
...
express.js - single routing handler for multiple routes in a single line
...
require the file of your original route and define the new route like this
var user = require('./users');
router.post('/login', user.post('/login'));
share
|
improve this answe...
What APIs are used to draw over other apps (like Facebook's Chat Heads)?
...anager = (WindowManager) getSystemService(WINDOW_SERVICE);
chatHead = new ImageView(this);
chatHead.setImageResource(R.drawable.android_head);
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.Layo...
ReSharper warns: “Static field in generic type”
...y legal to have a static member (field, property, method) declared in your newly created class (as in any other class) and no sign of any error here.
It would be somewhat suspicious, at first sight, if you declare static MyStaticProperty<T> Property { get; set; } within your class blueprint, ...
How to write header row with csv.DictWriter?
...
Edit:
In 2.7 / 3.2 there is a new writeheader() method. Also, John Machin's answer provides a simpler method of writing the header row.
Simple example of using the writeheader() method now available in 2.7 / 3.2:
from collections import OrderedDict
order...